Oil prices fluctuate amid geopolitical and economic uncertainty.

Oil prices fell as Iran's supreme leader said that a nuclear deal with the West was possible, which could flood the market with supply as sanctions on Iranian crude exports are lifted. Anxiety over increasing supply came with markets already fretting over sluggish demand and worsening economic conditions. A slew of disappointing economic indicators from major crude consumers U.S. and China weighed on oil prices through recent weeks, playing into fears that weak economic conditions will largely stymie demand for crude this year.